A manual of the modern theory and technique of surgical asepsis . bread, the bleeding holy wa-fers, etc. A peculiar fungus is the actinomyces (rayfungus, actinomyces bovis s. hominis ; Figs. 18,19), discovered as early as 1845 by B. von Lan-eenbeck in a vertebral abscess of a man. Itused to be classed among the hyphomycetes(mould fungi), but is now regarded simply as avariety of schizomycetes. Its favorite domicileis the maxillae of cattle, where it causes induratedtumor-like masses which undergo softenine andsuppuration. In man the lower jaw (Fig. 19)also is most frequently the primary focus
A manual of the modern theory and technique of surgical asepsis . bread, the bleeding holy wa-fers, etc. A peculiar fungus is the actinomyces (rayfungus, actinomyces bovis s. hominis ; Figs. 18,19), discovered as early as 1845 by B. von Lan-eenbeck in a vertebral abscess of a man. Itused to be classed among the hyphomycetes(mould fungi), but is now regarded simply as avariety of schizomycetes. Its favorite domicileis the maxillae of cattle, where it causes induratedtumor-like masses which undergo softenine andsuppuration. In man the lower jaw (Fig. 19)also is most frequently the primary focus of thismalignant disease, which extends continuouslyinto the adjacent tissue and to internal organs,as the lungs, the pleurte, the heart, the liver, the INFLUENCE OF MICROBES. 47 kidneys, the intestines, and the brain. The acti-nomyces can be cultivated on agar by cutting offoxygen, in which event yellowish-white coloniesare formed; but if the air has free access anochre-colored appearance is obtained. Pure cul-tures injected into the cavum peritonei of rabbits. Fig. iS.—Actinomyces Fig. 19.—Actinomycosis. produce typical actinomycosis. The fungusstains well with the ordinary aniline dyes andby the method of Gram. The human body may be invaded by thesemicro-organisms through solutions of continuityeither of the skin or of the mucous membraneswhere the microbes fall directly upon them. Asa rule, however, they are transferred or are inoc-ulated by other substances to which they adhere— 48 SURGICAL ASEPSIS. that is, by the wounding instrument, by the fingers,by clothing, or by unclean wound-dressings. Thehair-follicles and the sebaceous follicles may alsobe factors in this process. In view of recent investigations, it seems moreand more positive that the air has no bearingupon infection, but that contact is other words, the millions of micro-organismssuspended in the air and which may invade awound are usually innocent and of an indifferentcharacter. Were th
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectsurgery, bookyear1895
